Notification G.S.R - 826(E) dated
16th November, 2009
16th November, 2009
Ref:
- The Environment (Protection) Seventh Amendment Rule 2009
SCHEDULE VII: - NATIONAL
AMBIENT AIR QUALITY STANDARDS :-INDIA
[See Rule 3(3B) of EP Rule 1986]
SCHEDULE
VII
of Environment Protection Rule 1986
SN
|
Pollutants
|
Time
Weighted Average
|
Concentrations in Ambient Air
|
|||
Industrial,
Residential, Rural and Other Area
|
Ecologically
Sensitive Area (Notified by Central Govt.)
|
Methods of Measurement
|
||||
(1)
|
(2)
|
(3)
|
(4)
|
(5)
|
(6)
|
|
1
|
Sulphur Di-oxide, SO₂, (µg/m³)
|
Annual*
24hours**
|
50
80
|
20
80
|
-Improved West & Gaeke.
-Ultraviolet Fluorescence.
|
|
2
|
Nitrogen Di-oxide, NO₂, (µg/m³)
|
Annual*
24hours**
|
40
80
|
30
80
|
-Modified Jacob &
Hoehhelser (Na-Arsenite).
-Chemiluminescence.
|
|
3
|
Particulate Matter (Size
less than 10µm) or PM₁₀, (µg/m³)
|
Annual*
24hours**
|
60
100
|
60
100
|
-Gravimetric
-TOEM
-Beta Attenuation
|
|
4
|
Particulate Matter (Size
less than 2µm) or PM₂.₅, (µg/m³)
|
Annual*
24hours**
|
40
60
|
40
60
|
-Gravimetric
-TOEM
-Beta Attenuation
|
|
5
|
Ozone, Oᴣ, (µg/m³)
|
8hours**
1hour**
|
100
180
|
100
180
|
-UV Photometric
- Chemiluminescence
-Chemical Method
|
|
6
|
Lead, Pb, (µg/m³)
|
Annual*
24hours**
|
0.5
1.0
|
0.5
1.0
|
-AAS/ICP Method after
sampling on EPM 2000 or equivalent filter paper.
- ED-XRF using Teflon Filter
|
|
7
|
Carbon Monoxide, CO, (µg/m³)
|
8hours**
1hour**
|
02
02
|
04
04
|
-Non-Dispersive Infrared
(NDIR) Spectroscopy.
|
|
8
|
Ammonia, NHᴣ, (µg/m³)
|
Annual*
24hours**
|
100
400
|
100
400
|
- Chemiluminescence
-Indophenol Blue Method
|
|
9
|
Benzene, C6H6, (µg/m³)
|
Annual*
|
05
|
05
|
-Gas Chromatography based
continuous analyser.
- Adsorption &Desorption
followed by GC analysis.
|
|
10
|
Benzo Pyrene (BaP)-
Particulate Phase only, (ng/m³)
|
Annual*
|
01
|
01
|
-Solvent extraction followed
by HPLC/GC analysis
|
|
11
|
Arsenic (As), (ng/m³)
|
Annual*
|
06
|
06
|
-AAS/ICP Method after
sampling on EPM 2000 or equivalent filter paper.
|
|
12
|
Nickel, (Ni), (ng/m³)
|
Annual*
|
20
|
20
|
-AAS/ICP Method after
sampling on EPM 2000 or equivalent filter paper.
|
|
* Annual arithmetic mean of
minimum 104 measurements in a year at a particular site twice a week 24 hourly
at uniform intervals.
** 24 hourly or 8 hourly or 01
hourly monitored values, as applicable, shall be complied with 98% of the time
in a year. 2% of the time they may exceed the limits but not on two consecutive
days of monitoring.
Note- Whenever & Wherever monitoring results of two
consecutive days of monitoring exceeds the limits specified above for the
respective category, it shall be considered adequate reason to institute
regular or continuous monitoring & further investigation.
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